c语言写的红外遥控解码程序.doc

《c语言写的红外遥控解码程序.doc》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、c语言写的红外遥控解码程序#include"STC89C51RC.H"sbitDQ=P4^3;sbitSPK=P1^0;#include#defineseg1XBYTE[0xffec]#defineseg2XBYTE[0xffed]#defineseg3XBYTE[0xffee]#defineseg4XBYTE[0xffef]unsignedcharIRMcode[4];unsignedcharcodeledmap[]= //共阴LED数码管译码表{  0x3f,0x06,0x5b,0x4f,0x66, //0,1,2,3,4, 0x6d

2、,0x7d,0x07,0x7f,0x6f, //5,6,7,8,9,   0x77,0x7C,0x39,0x5E,0x79, //A,b,C,d,E, 0x71,      //F,};voiddelay(unsignedint);voidmain(){ EA=1; EX2=1;    while(1) {   if(IRMcode[2]==~IRMcode[3]){     seg1=~ledmap[IRMcode[2]/100];   seg2=~ledmap[IRMcode[2]/10%10];   seg3=~ledmap[IRMcode[2]%10

3、];   seg4=0xff;//熄灭  }  }}voidSound(void){ SPK=0; delay(10000); SPK=1;}voidIRMint(void)interrupt6 using2{ unsignedcharcount; unsignedintcount1; unsignedchari,j;  EA=0;  count=9; while(--count) {  delay(100);//440us  if(DQ){EA=1;return;} } while(DQ==0);//通过引导码余下的低电平 //以上完成引导码4.5ms的低

4、电平检测  count=9; count1=0; while(--count) {  delay(100);//440us  if(DQ==0){EA=1;return;} } while(DQ==1)//通过引导码余下的高电平 {  if(count1++>1000){   P1=0x55;EA=1;return;} } //以上完成引导码4.5ms的高电平检测  count1=0; for(j=0;j<4;j++)//有效字节数设定 {  for(i=0;i<8;i++)//字节bit数  {   while(DQ==0);//通过编码低电平   del

5、ay(200);//延时判断编码高电平维持长度   IRMcode[j]<<=1;   if(DQ)IRMcode[j]

6、=0x01;   while(DQ==1){//通过编码余下的高电平    if(count1++>2000){EA=1;return;}    }  } }   Sound();   EA=1;}//通用延时函数//22.1184,10=48.4us(5us+43.4)//22.1184,100=439us(43.4*10+5)//22.1184,1000=4345us(43.4*100+5)//22.1184,10000=43450u

7、s(43.45*1000+5)voiddelay(unsignedintt){      while(--t); }